EVALUATING A POPULATION DYNAMICS OF TERMINALIA IVORENSIS A.CHEV. - A THREATENED TREE SPECIES IN NIGERIA
Keywords:
Ecological disturbances; Extinction risk; Population dynamics; Regeneration; Threatened species.Abstract
Ivory Coast Almond (Terminalia ivorensis A.Chev.) is a threatened tree species in Nigeria that is being widely harvested by local people for several uses. This study examined a wild population of this species in Ijebu Igbo, Ogun State, Nigeria to determine the status of this population. Data were generated from basal stem diameter and stem height of individuals of this species in the population sampled. Population distribution curves were constructed. There was a bell shape curve of the population distribution which depicts population with poor regeneration capacity, non-viable population and a population strongly affected by ecological disturbances. This study revealed there is a potential increase in local extinction risk of Terminalia ivorensis if populations of this species remain unviable. It is recommended that regeneration of this species be encouraged within areas suitable for its growth and development and reforestations using this species should also be encouraged.
References
Adeoluwa, O. A., Aderibigbe, A. O., Agu, G. O., Adewole, F. A. and Eduviere, A. T. (2015). Neurobehavioural and analgesic properties of ethanol bark extract of Terminalia ivorensis A Chev.(Combrataceae) in mice. Drug research 65(10): 545-551.
Ajayi, S. A., Ofusori, D. A., Ojo, G. B., Ayoka, O. A., Abayomi, T. A. and Tijani, A. A. (2011). The microstructural effects of aqueous extract of Garcinia kola (Linn) on the hippocampus and cerebellum of malnourished mice. Asian pacific journal of tropical biomedicine 1(4): 261-265.
Albani Rocchetti, G., Armstrong, C. G., Abeli, T., Orsenigo, S., Jasper, C., Joly, S., Bruneau A., Zytaruk M. and Vamosi, J. C. (2021). Reversing extinction trends: new uses of (old) herbarium specimens to accelerate conservation action on threatened species. New Phytologist 230(2): 433-450.
Bamiboye S.O., Akande A.O., Adesola P.T., Owolawi O.T., Ashefon B.B., Kalejaiye B.T. and Adeoba M.I. (2023). Utilization of Terminalia ivorensis A. Chev. a threatened tree species in Nigeria and the implication on its risk of extinction. Natural Sciences: Journal of Science and Technology 12(2):1-5.
Bakali M., Ligavha-Mbelengwa, M.H., Potgieter, M.J. and Tshisikhawe, M.P. (2017). Impact of ethnobotanical utilization on the population structure of Androstachys johnsonii Prain. in the Vhembe Area of the Limpopo Province, South Africa. Insights for Forest Research 1 (1): 50-55.
Barnosky, A.D., Matzke, N., Tomiya, S., Wogan, G.O.U., Swartz, B., Quental, T.B.,
Marshall, C., McGuire, J.L., Lindsey, E.L., Maguire, K.C., Mersey, B. and Ferrer, E.A. (2011). Has the Earth’s sixth mass extinction already arrived? Nature 471: 51–57.
Beech, E., Rivers, M., Oldfield, S. and Smith, P.P. (2017). GlobalTreeSearch: The first complete global database of tree species and country distributions. Journal of Sustainable Forestry 5: 454–489.
Borokini, T.A. 2014. Systematic Compilation of IUCN Red-listed Threatened Plant Species in 177 Nigeria. International Journal of Environmental Science 104–133.
Chichorro, F., Juslén, A. and Cardoso, P. (2019). A review of the relation between species traits and extinction risk. Biological Conservation, 237, 220-229.
Chika, P. J., Sakpere, A. M., and Akinropo, M. S. (2020). Effect of pretreatments on germination of seeds of the timber plant, Terminalia ivorensis and Mansonnia altissima (a. Chev.). Notulae Scientia Biologicae 12(2): 334-340.
Chrystal, S., Mantyka-Pringle, C.S., Visconti, P., Di Marco, M., Martin, T.G., Rondinini C. and Rhodes, J.R. (2015). Climate change modifies risk of global biodiversity loss due to land-cover change. Biological Conservation 187: 103-111.
Gagneux, P. (2021). “Anthropogeny”, In Evolution of the Human Genome II: Human Evolution Viewed from Genomes, ed. N. Saitou (Springer, Tokyo), 3–27. DOI: https://doi.org/10.1007/978- 4-431-56904-6_1
International Union of Conservation of Nature (IUCN) Red List, (2022) version https://www.iucnredlist.org/species/61967837/61967853
Jimoh S.O., Amusa T.O. and Azeez, I.O. (2012). Prevalence, Utilization and Conservation Strategies for Non-Timber Forest Products in South western Zone of Nigeria. Resources and Environment 2(1): 46-54.
Kimmel, K., Clark, M. and Tilman, D. (2022). Impact of multiple small and persistent threats on extinction risk. Conservation Biology 36(5): e13901.
Kumar, S., Sharma, S. and Chattopadhyay, S. K. (2013). The potential health benefit of polyisoprenylated benzophenones from Garcinia and related genera: Ethnobotanical and therapeutic importance. Fitoterapia 89: 86-125.
Maua, J. O., MugatsiaTsingalia, H., Cheboiwo, J. and Odee, D. (2020). Population structure and regeneration status of woody species in a remnant tropical forest: A case study of South Nandi forest, Kenya. Global Ecology and Conservation 21: e00820.
Moran, D. & Kanemoto, K. (2017). Identifying species threat hotspots from global supply chains. Nature Ecology & Evolution 1(1): 0023.
Mohammed, A. I., Ejeh, S. P., Amartey, Y. D. and Ocholi, A. (2019). Determined uncertainty models of reference material properties and the en 338 strength class of Nigerian grown Terminalia ivorensis (black afara) timber. Nigerian Journal of Technology 38(2): 302-310.
Mukwevho, P. (2014). Investigating the correlates of extinction risk at regional scale: A case study of the Southern African flora. Mini-dissertation.Magister Scientiae, Department of Botany and Plant Biotechnology, University of Johannesburg.
Mir, T. A., Jan, M., Khare, R. K., & Bhat, M. H. (2021). Medicinal plant resources: threat to its biodiversity and conservation strategies. Medicinal and Aromatic Plants: Healthcare and Industrial Applications, 717-739.
Nic Lughadha, E., Bachman, S. P., Leão, T. C., Forest, F., Halley, J. M., Moat, J., ... & Walker, B. E. (2020). Extinction risk and threats to plants and fungi. Plants, People, Planet 2(5): 389-408.
Opuni-Frimpong, E., Gabienu, E., Adusu, D., Opuni-Frimpong, N. Y. and Damptey, F. G. (2021). Plant diversity, conservation significance, and community structure of two protected areas under different governance. Trees, Forests and People 4: 100082.
Pacifici, M., Foden, W.B., Visconti, P., Watson, J.E., Butchart, S.H., Kovacs, K.M., Scheffers, B.R., Hole, D.G., Martin, T.G. and Akçakaya H.R. (2015). Assessing species vulnerability to climate change. Natural Climate Change 5: 215–224.
Sala, O.E., Chapin, F.S., Armesto, J.J., Berlow, E., Bloomfield, J., Dirzo, R., HuberSanwald, E., Huenneke, L.F., Jackson, R.B., Kinzig, A., Leemans, R., Lodge, D.M., Mooney, H.A., Oesterheld, M., Poff, N.L., Sykes, M.T., Walker, B.H., Walker, M. and Wall, D.H. (2000). Biodiversity – global biodiversity scenarios for the year 2100. Science 287: 1770–1774.
Salami, A. O., Gbadebo, J. O. and Shittu, E. A. (2023). Germination and early growth of Terminalia ivorensis A. Chev. AND Khaya senegalensis (Desr.) A. Juss. Renewable 3(1): 55-62.
Shaltout, K. and Bedair, H. (2022). Diversity, distribution and regional conservation status of the Egyptian tree flora. African Journal of Ecology 60(4): 1155-1183.
Thiault, L., Marshall, P., Gelcich, S., Collin, A., Chlous, F. and Claudet, J. (2018). Mapping social–ecological vulnerability to inform local decision making. Conservation biology 32(2): 447-456.
Tshisikhawe, M.P, and Van Rooyen, M.W. (2013). Population biology of Elaeodendron transvaalense Jacq. in the presence of harvesting. Phyton International Journal of Experimental Botany 82: 303-311.
Victor P.M., Tshisikhawe P.M. and Magwede K. (2023). Population dynamics of Spirostachys africana Sond. a species highly exploited amongst some communities of Limpopo Province, South Africa. Biodiversitas 24(1): 492-497. DOI10.13057/biodiv/d240157
Visconti, P., Bakkenes, M., Baisero, D., Brooks, T., Butchart, S.H., Joppa, L., Alkemade, R., Marco, M.D., Santini, L. and Hoffmann, M. (2016). Projecting global biodiversity indicators under future development scenarios. Conservation Letters 9(1): 5-13.
